i recently installed zonealrm pro firewall for my pc, at 1st it was working fine with my internet but now it has really dragged ma net speed, im only able 2 surf properly after shutting it down. I have windows xp service pack 2 plz help?!?!?!

Also im using a wireless router, iv disabled ma xp firewall but da router firewall is on, is dat y ma net slows down with zonealarm>?.